Hatch cover for self-discharge railway cars



July 29, 1969 REBENQK ETAL 3,457,879

HATCH COVER FOR SELF-DISCHARGE RAILWAY CARS Filed Oct. 25, 1966 United States Patent 3,457,879 HATCH COVER FOR SELF-DISCHARGE RAILWAY CARS Anatoly Georgievich Rebenok, Dnepropetrovskaya ohL, ul. Shirokaya I, kv. 24; Valentin Nikolaevich Budenkov, Dnepropetrovskaya obl., Pionersky per., 9, kv. 2; Jury Grigorievich Mezentsev, Dnepropetrovskaya obl., ul. Arsenicheva, 74, kv. 40; Lazar Pinkhusovich Vainshtein, Dnepropetrovskaya obl., prospekt Leuina, 29, kv. 8-2; Mikhail Ivanovich Durachenko, Dnepropetrovskaya obl., ul. Lesopilnaya 2/ 28, kv. 32; and Ivan Timofeevich Kovdrya, Dnepropetrovskaya obl., Bratskaya ul., 14 kv. 3, all of Dneprodzerzhinsk, U.S.S.R.

Filed Oct. 25, 1966, Ser. No. 589,395 Claims priority, application U.S.S.R., Oct. 27, 1965,

1,034,080 Int. Cl. B6111 39/00 U.S. Cl. 105-377 3 Claims ABSTRACT OF THE DISCLOSURE A light weight strong hatch cover for self-discharge railway cars comprising two parallel metal hollow members joined together by a series of segment-like diaphragms. An inner sheathing and outer sheathing is attached to the frame and diaphragms such that the hatch cover in cross-section approximates the peripheral shape of the diaphragm. Preferably, the outer sheathing is corrugated and a rubber packing is attached at least along said parallel members.

This invention relates to hatch covers for railway selfdischarge cars.

Known in the art are hatch covers for railway self discharge cars which comprise a frame of longitudinal beams made of rolled metal and sheathed with a metal sheet of large section.

A disadvantage of the known hatch covers for railway cars is their great weight.

It is an object of this invention to provide railway selfdischarge cars with hatch covers of light weight but having high strength.

The present invention essentially provides a hatch cover for railway self-discharge cars having a frame comprised of two hollow members of a closed contour cross-section and connected by segment-like diaphragms to which inner and outer sheathings is fastened.

It is expedient to make the outer sheathing corrugated.

Other objects and advantages of the present invention will become apparent from the detailed description of its preferred embodiment, reference being made to the accompanying drawings, wherein:

FIGURE 1 is a front view of a hatch cover according to the invention;

3,457,879 Patented July 29, 1969 FIGURE 2 is a side view, partially in section, of the same hatch cover according to the invention; and

FIGURE 3 is a section taken on line l-I of FIG. 1.

The hatch cover for railway self-discharge cars contains a frame to which sheathing is fastened. The frame comprises two hollow metal members 1, 2 (FIGS. 1, 2) being of a closed contour cross-section and segment-like diaphragm cross members 3 (FIG. 3), connecting the hollow members.

Inner and outer sheathings 4 and 5 respectively are welded to the hollow members 1, 2 and diaphragms 3. The outer sheathing 5 is made of corrugated sheet metal While the inner sheathing 4 consists of butt-welded sheets 6.

The hatch cover, therefore, has segment-like cross-section, see FIG. 2. For sealing the hatch cover has a rubber packing 7 (FIG. 3) extending along its whole periphery (FIGS. 2 and 3) and fastened with bolts 8.

The cover is coupled with its opening-and-closing mechanism by means of pins 9 (FIG. 1), which are fastened to end diaphragms 3, and unlike other known cover designs do not extend the whole length of the hatch. This also results in reducing the cover weight and simplifying its design.

The cover is fastened to the railway car by means of loops 10.

Covers having a design according to the invention weigh about 300 kg. less than those of the designs known heretofore, their strength being considerably higher at the same time.

What is claimed is:

1. A hatch cover for self-discharge railway cars comprising a frame consisting of two parallel metal hollow members each having a closed contour cross-section; a series of segment-like arcuate diaphragms connecting said member; and an inner and outer metal sheathing fastened to said frame and diaphragms so as to form a strong light weight hatch cover which approximates the peripheral shape of said diaphragms in cross-section.

2. A cover as claimed in claim 1 wherein said outer sheathing is corrugated and further consisting of a rubber seal at least along said parallel members.

3. A cover as claimed in claim 1 further consisting of pins for securing said hatch cover solely mounted in each end diaphragm.

References Cited UNITED STATES PATENTS 1,087,167 2/ 1914 Groehn -377 2,224,118 12/ 1940 Bonsall 105377 2,239,513 4/1941 West 105-377 2,256,334 9/1941 Zeidler 105377 ARTHUR L. LA POINT, Primary Examiner RICHARD A. BERTSCH, Assistant Examiner 

